The femur is relatively hard and its chances of fracture are generally small, resulting in femur fractures usually due to strong violent injuries, such as car accidents, high falls, and pathological fractures. Among them, pathological fracture, such as leg tumor growth, can occur in the femur fracture without a large external force, even during walking. Therefore, if a femur fracture occurs, you should go to a regular hospital in time to identify the cause and give symptomatic treatment, avoid strenuous exercise during treatment, eat more vegetables and fruits, strengthen protein diet, keep the wound clean and dry, and prevent venous thrombosis.